Dies



Feb. 17, 1925. 1,527,065

c G. PAPANT DIES Filed June 16, 1921 2 Sheets-Sheet 1 Imf (Z2287 flay/1732 7 Feb; 17, 1925. 1,527,065

0. G. PAPANT LAIJb/QQ Y IJ Patented Feb. 17, 1925.

UNITED STATES PATENT OFFICE.

CHRIST G. PAPANT, OF CHICAGO, ILLINOIS.

DIES.

Application filed June 16,

To all 107mm it may concern:

Be it known that I, GHnIs'r G. PAPANT, a citizen of the United States, residing at Chicago, county of Cook, and State of Illinois, have invented a new and useful Improvement in Dies, of which the following is a specification.

This invention relates to dentistry and more particularly to that part of this art pertaining to bridge-work.

As is well known to those skilled in the art, two methods have, in the past, been employed for reproducing a plaster cusp in gold, namely, by the swaging method, or by casting. The former is by far the more popular, and my present invention is directed toward and has as its primary aim the improvement of this method, by rendering it possible to more quickly and accurately form the gold cusp and tooth contour where both are to be of gold, or to facilitate the construction of the cusp for use on a tooth having a porcelain facing.

Previously, in the swaging method, the operator took an impression of the abutment teeth or those immediately adjacent to the teeth which were supplied to be in a bridge, for the purpose of making a model from which to form the artificial bridge, this impression being made in plaster and reproduced in relief and placed in an articulator, on which latter the bridge is plotted and laid out so that the proper occlusion may be obtained.

In forming the cusp, considerable time was consumed, as it has been necessary under the old method to make a die, and furthermore where two ormore teeth form the bridge the separate cusps and facings had to be connected by solder in addition to their connection to the solder filling or to the coping or band. Under my present method and witlr the means provided I eliminate the double-soldering preferably forming the cusp integrally with the gold buccal, in one instance, and also making'it possible, if desired to make two or more adjacent cusps or cusps and buccal surfaces of a single stamping.

Other aims of this invention, together with a more concrete understanding of the same, may be obtained from the following detail description and the claims, taken with the accompanying drawings, inwhich:

Figure 1 is a transverse sectional view of 1921. Serial No. 478,009.

a die construct-ed in accordance with my invention, after forming a cusp and buccal.

Figure 2 includes two perspective views of the male and female portions of the die separated.

Figure 3 is a side elevation of the socalled articulator for carrying the cusps for obtaining perfect occlusion.

Figure 4: is a perspective view of a pair of gold cusps and bucca-l portions constructed integrally and ready for insertion in the articulator.

Figure 5 is a sectional buccal.

Figure 6 is another View like Figure 1, the die forming the cusp only.

Figure 7 is an enlarged sectional view of a portion of the articulator taken on line 7 -7 of Figure 3, looking in the direction indicated by the arrows.

Figure 8 is the stamping in section filled with wax.

Figure 9 is a similar stamping arranged for a porcelain facing.

Figure 10 is a perspective rear view of the porcelain facings.

Figure 11 is a sectional view of the same secured to the solder filling.

Figure 12 is a view similar to Figure 7, showing the artificial tooth of Figure 9 in the articulator.

For convenience in describing, the process of swaging artificial teeth of gold has been illustrated and will be generally described; my invention being described in connection therewith in order to more completely emphasize its advantages.

Referring now in detailto the drawings, it will be seen from Figures 1 and 2, that a detail of a cusp and swaging device is illustrated, constructed in accordancewith my invention, and comprising blocks 5 and 6, carrying, respectively, the die and counter-die. The block is provided with sloping faces 7 and 8, converging in the male portion of the die, which latter consists of a plurality of elevations or formations 9, corresponding in shape to ordinary or typical teeth, thus providing a bank of teeth shapes arranged in accordance with and presenting the same contour as the natural teeth when in the mouth. The base of the tooth formation-0n the die is bordered by a pair of shoulders 10 and 11 for a purpose which will appear presently.

The counter-die or female portion is provided; in theblock 6, andtakesitheform of a V-shapedgroove .12 having the tapering walls 13 and 14, the former having a plurality of depressions 15 formedtherein and extending as at 16 to the wall I L'these depressions corresponding to the elevations 9,;

and adapted to receive said elevations when the die is being operated. .The wall. l3,l*at its outer end, is terminated in a longitudinal shoulder 17, andthen slopes'away at 18. The formation of the shoulderll provides a groove as shown in Figure 1, so that when the dies are assembled there is room for the edge of material being worked, thismaterial being shown at 19in Figurel. The shoulder: 17 cooperates with the shoulder 10 to provide a flare to the other. edge ofthe material. The; finished: product, in section is shown in Figure 5, the. cusp ibeing indicated at20,z1an'd the buccalportionyof the gold casing at 21. A pair of integral'com- .pleted. gold: cusps are :shownyin: Figure at,

having the same reference characters-.as Figure 5, the product lie-rebemgishown with a wax filhng and 'ready for disposition inthe. articulator.

After the: gold cusp' and :buccal portions have-been finished'by the dies and filled with wax, they are insertedint-otheiarticnlator, the latter being shownnn F-igu-re'B, and conventionally comprising the bent arms23 and 1 2 pivotally connectedat 25. Aneadju'sting screw 26 is also provided. The :arms carry plaster reproductions 27 and 28 ofthe1up per and lower teeth .to be replaced, the latter being indicated .ati29, ,and:comprising. the

members shown in Figure 4r, .securedatothe plaster; 27 between 'the abutmentnteeth,

From this the proper occlusion is 0b-' tained.

In Flgure 6,- tllGFCllQS are illustrated in forming a 'slngle cusp or a' ,13lllI'EIllty,:1'EISO 'placed on thearticulator'and set:for proper occlusion; then removed and-placed in "the "substituted. -Figure 12 shows the tootlrin position .fOr melting out, .and' ready :tor solder substitution.

finished productrin section,- with solder 37 in place, and, in this case,the twobridge 1 teethrready for mounting on'thercoping. A detail discussion of theumanner. of applying-- coping, anchor; pinsto the teeth and the like- Figure 11, shows the will be omit-ted, as such is wellflknown to those skilled in the art and has no bearing upon the invention here.

:In'Figure 7, an integral cusp 'andz buccal portion is shown in the articulator ready for melting out, this being arranged in the melting out step the same as the structure of Figure 12. Figure 8 illustrates the cusp and buccal portions filled with wax ready for rinsertioaintotheimpression as indicated in Figure 7.

As previously"pointed out, it" has been necessary, underthe old method of forming gold cusps for bridge-work, to form the: cusp andHbuccaL portions of the. tooth .separate and when assembling, to". connect .7 these .two

:"portions: byns'oldering. In View of the fact that great skill and considerable time .are

:required for connecting-these parts, together withfthe finishing process, this iClfl SS .ofwork is expensive. Furthermore, as the-body, of

the toot-h; later appliech is of solder,": there is great danger of spoiling theujointibetween the cusp ritl'ld bnccali of the: tooth. My invention: reduces not. onlyxtherworknand time necessary-abut also makes. a SmOO'thEI'l and more finishedproduct in gold. Theisame resultsuare' obtainablev inxthe event that a porcelain facing; is employed.

Any variations of; the die,tl1e: shape ofsthe operatingv parts :thereof, number. of teeth to" .be ormed,nand the particular shape, loca- ItlOIl and size may. be madeyit,eof course being desirable that the operator. [keep :on :hand a number of diesforthe various teeth \found to be necessary.

.Minor changes,- such. as are zenumerated above, may be: made in the lClGtfLllSfWlthQllt departing from 1 the :spirit of the invention and scope of the claims.

I :claim: lqA device-wfor forming the cusp and :buccalportions of an artificial tooth from a :single. piece. of-ssheetmaterial, comprising a pair of die membersxhaiving each; respectively, a' longitudinal groove: and acomple- 'mental projection, a plurality of complemental depressions and elevations on said groove and projection, respectively, and corresponding only to=theousp and buccal portIOHS of a normal seti of' humalrteeth, said groove and:projectionw-being' adapted to receive a'sh'eet of material 'therebetween in which the cusp and buccal" portions of the artificial teeth are inrpressed'by said depresplaster impression 36, onthe. articulator (Fig. 12,) the .wax melted out, andcso'lder sions and elevations 'when said dies are oined.

and-size to the-cusp aiid buccal"portions only of a series of adjacenthumanteeth,"complc mental depressions in said groove to receive said elevations, said dies adapted to receive a sheet of material therebetween, and when compressed serving to form said material into the shape of the cusp and buccal portions of human teeth.

3. In a device of the character described, in combination, adie couple comprising a die block provided with a longitudinal integral projecting flange substantially V- shaped in crosssection, a plurality of enlargements upon said flange near the apex thereof and conforming in shape and size to the cusp and buccal portions only of a continuous series of adjacent human teeth in their natural sequence, and a counter die comprising a block having depressions therein complemental to thecnlargements of said die block.

4:. In a device of the character described, in combination, a die couple comprising a die block provided with a longitudinal integral projecting flange substantially V- shaped in cross-section, a plurality of enlargements upon said flange near the apex thereof and conformin in shape and size to the cusp and bucca-l portions only of a continuous series of adjacent human teeth in their natural sequence, and a counter die member comprising a block provided with a longitudinal substantially V-shaped groove, said groove having aseries of recesses in the bottom thereof conforming in shape and size to the cusp and bucca-l portions only of a continuous series of human teeth in their natural sequence, said recesses being complemental to said enlargements and said groove being complemental to said flange.

In testimony whereof, I aflix my signature in the presence of two witnesses at 36 W. Randolph St, Chicago, Illinois.

CHRIST G. PAPANT. Witnesses L. OPIE READ, IRENE M. MARTIN. 

